High-efficiency arc extinguishing moving contact assembly

Abstract

The utility model discloses a high-efficiency arc-extinguishing moving contact assembly, which belongs to the field of electrical equipment and comprises a moving contact frame used for fixing, a groove is arranged on the surface of the moving contact frame, two magnets used for extinguishing electric arcs are arranged in the groove, two elastic sheets are arranged in the moving contact frame, and the elastic sheets are fixed on the moving contact frame. According to the moving contact assembly capable of efficiently extinguishing the arc, after a plurality of layers of moving contact frames are stacked and assembled, the vertical dimensional tolerance between the moving contact pieces can be effectively reduced, the reliability of a product is enhanced, the arc extinguishing effect is remarkable, the service life is prolonged, the production cost is reduced, the production efficiency is improved, and the production cost is reduced. Contact performance is enhanced, and electrical faults are reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of electrical equipment, especially a high -efficient arc extinguishing moving contact assembly. BACKGROUND

[0002] In the existing electrical switching device, the moving contact assembly is the key component to realize the circuit on-off. However, the traditional moving contact assembly has many problems. For example, the moving contact is easy to produce arc in the process of frequent opening and closing operation. Arc not only causes the ablation of the contact, shortens the service life of the moving contact assembly, but also may cause electrical failure, affecting the safe and stable operation of the whole electrical system. The existing moving contact assembly can meet the basic circuit on-off problem, but the arc extinguishing effect is not significant, which will shorten the service life, affect the contact performance and cause electrical failure.

[0003] After searching, Chinese patent document (authorized announcement number CN205582860U), the utility model discloses a moving contact assembly, including the contact frame, the articulated on the contact frame a plurality of moving contact, the moving contact towards the contact frame one side is provided with spring, the moving contact is provided with silver contact point to the side away from the spring, the moving contact and / or the contact frame is provided with fixed recess, the fixed recess is provided with reinforcing convex, the fixed recess with the spring one end is connected, and the reinforcing convex is inserted into the end. The utility model aims at providing a kind of moving contact assembly, the utility model has the advantages of compact structure, stable and reliable, the high -efficient arc extinguishing moving contact assembly can meet the basic circuit on-off problem, but the arc extinguishing effect is not significant, which will shorten the service life, affect the contact performance and cause electrical failure. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of high -efficient arc extinguishing moving contact assembly to solve the problems in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of high -efficient arc extinguishing moving contact assembly, including the moving contact frame for fixing, the surface of the moving contact frame is provided with recess, the inside of the recess is provided with two magnets for extinguishing arc, the inside of the moving contact frame is installed with two elastic sheets, the two ends of two elastic sheets are connected with moving contact piece, and the two ends of the moving contact piece are provided with bending angle.

[0006] Preferably, the side of the moving contact piece is installed with the first boss for contact.

[0007] Preferably, one side of the moving contact piece is provided with the second boss for cooperation.

[0008] Preferably, the outer periphery of the moving contact frame is provided with cavity for component entry.

[0009] Preferably, the inside of the cavity is connected with a moving contact frame auxiliary for fixing the assembly, and one end of the moving contact frame auxiliary is provided with a buckle.

[0010] Compared with the prior art, the technical effects and advantages of the utility model are:

[0011] The high-efficiency arc-extinguishing moving contact assembly benefits from the structure of the magnet and the groove, increases the magnet in the limited space structure, generates the acting force through the magnetic field, further enhances the arc-extinguishing capacity, generates the arc along the separation direction when the moving contact piece separates, and the magnet continuously generates the magnetic field, which is perpendicular to the separation arc according to the left-hand rule of Fleming, so that the current-carrying wire is subjected to the Ampere force in the magnetic field, and no matter the direction of the current in the arc or the direction of the magnetic field in the magnet, the arc is subjected to the upward or downward force in the direction of the arc and the magnetic field to pull the arc, so that the arc is more easily extinguished.

[0012] The high-efficiency arc-extinguishing moving contact assembly benefits from the structure of the moving contact frame, is integrally formed, has no upper and lower space and no extra size gap, can effectively reduce the upper and lower size tolerance between the moving contact pieces after the multi-layer moving contact frames are stacked and assembled, and enhances the reliability of the product.

[0013] The high-efficiency arc-extinguishing moving contact assembly has simple part structure, is convenient to assemble, does not need to be assisted by the tool, has no other process steps, and does not need to worry about the problems of confusion and misassembly. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the specific embodiment or the prior art of the utility model, the drawings needed to be used in the specific embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to the drawings without creating the creative labor.

[0015] Fig. 1 It is a structural schematic view of the utility model;

[0016] Fig. 2 It is a sectional view of the utility model;

[0017] Fig. 3 It is a structural schematic view of the spring piece and the moving contact piece of the utility model;

[0018] Fig. 4 It is a side view of the spring piece and the moving contact piece of the utility model.

[0019] EXPLANATION OF REFERENCE NUMERALS:

[0020] In the diagram: 1. Moving contact bracket auxiliary; 11. Buckle; 2. Moving contact bracket; 21. First boss; 22. Groove; 23. Cavity; 3. Magnet; 4. Spring piece; 5. Moving contact piece; 51. Second boss; 52. Bending angle. Detailed Implementation

[0021] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0022] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0023] like Figs. 1 to 4 The diagram shows a high-efficiency arc-extinguishing moving contact assembly, including a moving contact frame 2 for fixing. The surface of the moving contact frame 2 is provided with a groove 22. Two magnets 3 for extinguishing electric arcs are arranged inside the groove 22. The two magnets 3 are inserted into the groove 22 of the moving contact frame to the bottom. Two spring pieces 4 are installed inside the moving contact frame 2. Both ends of the two spring pieces 4 are connected to moving contact pieces 5. The two spring pieces 4 are fastened in the bending angles 52 on both sides of the moving contact pieces 5. The bending angles 52 on both ends of the moving contact pieces 5 are limited by the second protrusion 51. At this time, the spring pieces 4 on both sides are in a state of deformation due to compression, so that the two moving contact pieces 5 are always in contact.

[0024] The side of the movable contact piece 5 is provided with a first boss 21 for contact. The body of the first boss 21 is made of copper alloy material with high conductivity. The first bosses 21 of the two movable contact pieces 5 are aligned with each other. A second boss 51 for cooperation is provided on one side of the movable contact piece 5. The second boss 51 is on the same side.

[0025] The outer periphery of the movable contact frame 2 is provided with a cavity 23 for the component to enter. The cavity 23 is connected to a movable contact frame auxiliary 1 for fixing the component. One end of the movable contact frame auxiliary 1 is provided with a buckle 11. The movable contact frame auxiliary 1 is inserted into the corresponding cavity 23 of the movable contact frame 2 and fixed by the buckle 11, thereby completely restricting and fixing the movable contact piece 5.

[0026] Working principle

[0027] The high-efficiency arc extinguishing moving contact assembly, when in use, aligns the first bosses 21 of the two moving contact pieces 5 oppositely, aligns the second bosses 51 on the same side, then buckles the two elastic pieces 4 in the bending corners 52 on the two sides of the moving contact pieces 5, then inserts them into the cavities 23 of the moving contact holder 2, limits by the second bosses 51, at this time, the elastic pieces 4 on the two sides are in the stressed deformation state due to extrusion, makes the two moving contact pieces 5 always adhere, then inserts the moving contact holder auxiliary 1 into the corresponding cavities 23 of the moving contact holder 2, fixes by the buckles 11, so that the moving contact pieces 5 are completely limited and fixed. Finally, inserts the two magnets 3 into the grooves 22 of the moving contact holder to the bottom.

[0028] It should be noted that the relational terms herein, such as first and second, are used solely to distinguish one from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions.

[0029] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments can be changed, modified, replaced and varied in many ways without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency arc quenching moving contact assembly comprising a fixed moving contact holder (2), characterized in that: The surface of the moving contact support (2) is provided with a groove (22), the inside of the groove (22) is provided with two magnets (3) for eliminating arc, the inside of the moving contact support (2) is provided with two elastic sheets (4), the two ends of the two elastic sheets (4) are connected with moving contact pieces (5), and the two ends of the moving contact pieces (5) are provided with bending angles (52).

2. A high-efficiency arc quenching moving contact assembly according to claim 1, characterized in that: The side of the moving contact piece (5) is provided with a first boss (21) for contact.

3. A high-efficiency arc quenching moving contact assembly according to claim 2, characterized in that: One side of the moving contact piece (5) is provided with a second boss (51) for cooperation.

4. The high-efficiency arc-extinguishing movable contact assembly of claim 1, wherein: The outer periphery of the moving contact support (2) is provided with a cavity (23) for component entering.

5. A high efficiency arc quenching movable contact assembly according to claim 4 wherein: The inside of the cavity (23) is connected with a moving contact support auxiliary (1) for fixing components, and one end of the moving contact support auxiliary (1) is provided with a buckle (11).

Images